diff --git a/demos/KINETIS/RT-FREEDOM-KL25Z/main.c b/demos/KINETIS/RT-FREEDOM-KL25Z/main.c
index df949e57f..8125e198a 100644
--- a/demos/KINETIS/RT-FREEDOM-KL25Z/main.c
+++ b/demos/KINETIS/RT-FREEDOM-KL25Z/main.c
@@ -19,8 +19,8 @@
 #include "test.h"
 
 static THD_WORKING_AREA(waThread1, 64);
-static msg_t Thread1(void *arg)
-{
+static THD_FUNCTION(Thread1, arg) {
+
   (void)arg;
   chRegSetThreadName("RedBlinker");
   while (TRUE) {
@@ -30,8 +30,8 @@ static msg_t Thread1(void *arg)
 }
 
 static THD_WORKING_AREA(waThread2, 64);
-static msg_t Thread2(void *arg)
-{
+static THD_FUNCTION(Thread2, arg) {
+
   (void)arg;
   chRegSetThreadName("GreenBlinker");
   while (TRUE) {
@@ -41,8 +41,8 @@ static msg_t Thread2(void *arg)
 }
 
 static THD_WORKING_AREA(waThread3, 64);
-static msg_t Thread3(void *arg)
-{
+static THD_FUNCTION(Thread3, arg) {
+
   (void)arg;
   chRegSetThreadName("BlueBlinker");
   while (TRUE) {